Flask



FIG. 1 is a perspective view of the top, front and right side of a flask showing our new design;

FIG. 2 is a perspective view of the bottom, rear and left side thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof; and,

FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image thereof.

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a flask, as shown and described. 